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GRASP:一个模块化工具包,用于构建合成五基重复RNA结合蛋白

Michael Dennis^1,2, Su Yi Low^1,2, Amy Viljoen^1,2,3

¹School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia.

Nucleic acids research

|November 12, 2025

概括

该GRASP套件简化了合成Pentatricopeptide重复 (PPR) 蛋白质的创建,用于向RNA操纵. 该工具使研究人员能够轻松设计和构建定制的PPR蛋白质,用于各种RNA应用.

科学领域:

分子生物学分子生物学
在RNA生物学,RNA生物学.
蛋白质工程是指蛋白质工程.

背景情况:

重复蛋白 (PPR) 蛋白质是关键的真核RNA结合蛋白质,参与线粒体和叶绿体的转录处理.
它们的模块化性质为合成生物学工具提供了潜力,但其构建受到重复序列的阻碍.

研究的目的:

介绍GRASP套件,这是一个新的系统,用于高效组装合成PPR (sPPR) 蛋白质.
为了快速设计和构建具有特定RNA向能力的sPPR蛋白质.

主要方法:

开发GRASP套件使用S变体PPR动图和42个等离子体图书馆.
具有9,14或19个动机的sPPR蛋白组合,针对特定的RNA序列.
与MoClo组装标准的兼容性,用于简化蛋白质结构.

主要成果:

通过组装sPPR-RNA编辑蛋白和变体来证明GRASP套件的能力.
测试了31种sPPR变体对46个RNA标,通过测序分析RNA编辑水平.
通过观察到的编辑变异,对PPR-RNA相互作用产生了洞察力.

结论:

该GRASP套件促进了合成PPR蛋白的快速和特定组装.
这项技术为推进RNA处理和基因表达控制中的sPPR蛋白应用提供了基础.

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